The evidence of jet entrained gas near Cep E-A at \(\delta \) = \(0.0\)  is much weaker. The emission in the range [\(-70\) ;\(-11\) ]\(\hbox{\hspace{1.99997pt}km\hspace{1.99997pt}s$^{-1}$}\)  appears collimated with a typical diameter of \(1.5\) , consistent with the value measured in the northern jet in the range [\(+40\) ;\(+60\) ]\(\hbox{\hspace{1.99997pt}km\hspace{1.99997pt}s$^{-1}$}\) . The main difference with the northern lobe lies in that there is no jet entrainment of material at distance \(> 1\)  (800 au), i.e. that the amount of jet entrained material is much less in the southern lobe.
The CO jet emissivity is inhomogeneous and displays a maximum between \(\delta \) = \(-1\)  and \(\delta \)  = \(-3\)  (see Fig. REF ). This maximum coincides with the region of propagation of the Cep E-B jet, as mapped in the SiO 5–4 line by [1]}. We speculate that the absence of gas entrainment in the southern lobe could result from the interaction between both outflows/jets.
